Does anyone have any idea why some Simroute generated flightplans export okay and work well with PMDG but cannot load into FSX? This happens on about half of the simroute flightplans that I download. Would appreciate any suggestions.

Got an example?Even tho FSX is only a year or so old, it's navdata is much older. Perhaps the flightplan doesn't "fit."

Got ya. Thanks, Dan.